Patent GB-305457-A (GB)
Title: A liquid dispensing apparatus
IPC: B67D7/16
Filed: 1928-10-15
Abstract: 305,457. Fry Equipment Corporation, (Assignees of Townsend, W. S.). Feb. 4, 1928, [Convention date]. Fixed-chamber apparatus.-In a liquid dispensing apparatus having a measuring chamber 24 from which different predetermined volumes can be delivered by effecting an adjustment of a discharge conduit, a discharge valve 50 at the inlet end of the conduit is associated with a valve - operating mechanism which is operative in the different positions of the conduit, the inlet opening of the discharge conduit being carried bv a vertically adjustable member 55 which has a. control member, such as a handle 68, mounted thereon and movable to effect adjustment of the discharge conduit and operation of the discharge valve. As shown in Figs. 1 and 2, the measuring chamber 24 is transparent and is filled by means of an oscillating hand pump 30 through a conduit 32 provided with a cap or deflector 34. The liquid level is determined by an overflow pipe 35, and the level to which liquid has been discharged is indicated by markers 37 inside or outside the chamber 24. A discharge hose 41, fitted with a nozzle 39, is connected through a universal joint 42 to a discharge fitting 44, Fig. 3, connected by jointed tubes 48, 49 to the casing 47 of the discharge valve 50. The valve casing 47 is' adjusted vertically, to determine the volume to be discharged, by means of the hollow rod 55, which terminates in a rack 59 engaged by a pinion on a shaft 61 turned by a. handle 62. 'The rod 55 also carries the loosely mounted handle 68, the movement of which about the rod 55 first locks the valve casing 47 in position and then opens the discharge valve. For locking the valve casing, an extension 69 of the handle 68, Fig. 7, carries a pin 71 located between lugs 72, 73 on a loose collar 74 carrying a roller 75 adapted to enter the notch in one of a number of measuring fingers 76 mounted on the inlet pipe 32. For opening the discharge valve 50, a depending finger 70 on the extension 69 engages a roller 82 on an arm 81 of a weighted or spring-controlled bell-crank lever 80 fixed on a shaft 79 rotatable in a bearing 78 fixed on the rod 55; the inner end of the shaft 79 carrying an arm 56 bearing against a rod 54 secured to the valve 50 and passing through the hollow rod 55. When the apparatus is not in use, the nozzle 39 is inserted in a fitting 87, Fig. 5, connected at 85 to the overflow pipe 35 and fitted with a valve 90 normally closed but opened by the nozzle in its lowest position. A lug 40 on the nozzle can then be locked to a member 96 on the standard 20. The movement of the nozzle is normally prevented by the engagement of a shoulder 94 on the nozzle with an extension 98 of a locking bar 99 engaging at its upper end with a bell-crank 101, Fig. 9, pivoted on the shelf 66 and normally locked by a weighted lever 104. When the apparatus is to be locked, the valve casing 47 is brought into its lowest position, when the roller 82, Figs. 7 and 9, depresses the lever 104 and releases the bell-crank 101. The movement of the nozzle 39 into the locking position then causes the roller 82 to move to the left, opening the valve 50 and allowing the measuring chamber to drain through the valves 50, 90. The handle 68 in its lowest position may be turned into a position in which a door in the standard can be locked. In order to compensate for the volume of liquid displaced by the hollow rod 55 in all positions, a rod 114 secured to a fitting 46 on the valve casing 47 slides in sleeves 112, 113 in the cover 25, 29. In a modification, the drain fitting 87 is omitted, and a drain pipe within the standard is provided with a normally closed valve which is opened by a cam on the end of the rack 59 in the lowest position of the hollow rod 55. In other forms, the handle 62 is omitted, so that the handle 68 serves as the operating means; or a clutch or pawl connection is provided between the shaft 61 and the pinion thereon, or between the handle 62 and its shaft, so that the handles 62, 68 may be selectively used.